There are a ton of free classes, presentations and activities at any of Pima County's Public Libraries.

For example, tomorrow at 6 p.m. at the Flowing Wells Branch Library, 1730 W. Wetmore Road, University of Arizona Astronomy Cub and Graduate Students will give a presentation on the solar system, star classifications, earth's atmosphere, magnetic fields and the moon. The class will even get to go outside for a guided telescope viewing of the winter sky. Call 594-5225 for more information.

Introduction to Microsoft Word will be held at 2 p.m. tomorrow at Oro Valley Public Library, 1305 W. Naranja Drive. Call 594-5580 to register.

Family Storytime is also at Oro Valley Public Library tomorrow at 10:30 a.m.

Check out artwork done by Arts For All participants at Joel D. Valdez Main Library, 101 N. Stone Ave. from 9 a.m. to 8 p.m. Call 791-4010 for information.

You can also check out movies, books and use the computers...all for free.

Here is the Pima County Public Library's website, so you can see what's going on at the library closest to you: www.library.pima.gov